Dudleya
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DENSIFLORA  (Rose) Moran, 1943

 

Synonyms :

Stylophyllum densiflorum  Rose (1903) / Cotyledon densiflora  (Rose) Fedde (1904) / Echeveria densiflora  (Rose) A.Berger (1930)

Cotyledon nudicaule  Abrams (1903)

Echeveria nudicaulis  Munz (1935) / Dudleya nudicaulis  (Munz) Moran (1943) / Stylophyllum nudicaulis  (Munz) Abrams (1944)

 

Subgenus Stylophyllum

 

Distribution : USA (California: Los Angeles County, San Gabriel Mts.); steep granite canyon walls, 300 - 520 m, rare.

 

 

Description (according to  J. Thiede in IHSP, 2003) :

 

Stems < 20 x 1 - 2.5 cm, branched and cushion-forrning.

 

Rosettes 7 - 25 cm in diameter, with 20 - 40 leaves.

 

Leaves linear, ± cylindrical except the base, apically abruptly pointed, 6 - 15 cm x 6 - 12 (basally 1 – 2) mm, glaucous, farinose.

 

Inflorescence : Scape 10 - 30 cm, with few bracts, lower 1/2 sometimes without bracts, inflorescence 4 - 10 cm in diameter, with 3 to several 1 - 2x branched scorpioid branches, these 2 - 4 cm, with 2 - 8 flowers, pedicels 2 – 5 mm.

 

Flowers : Sepals triangular-ovate, 1.5 - 2.5 mm, petals narrowly ovate, divaricate from near the middle, acute, 5 - 10 x 2 - 3 mm, white or rose-coloured, tube 0.5 - 2 mm.

 

Flowering time : June.

 

Cytology : n = 17

 

Closely related to D. edulis and differing by the farinose more strongly flattened leaves, less numerous bracts, denser inflorescences, longer pedicels, shorter sepals and longer styles, see Moran (1943a) and Moran (1951a). 


In habitat :





At Santa Barbara Botanical Garden, CA, USA :




Photos Michael Wisnev




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